package com.sl.boot.admindemo.domain.drugOrder.controller;

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.internal.util.AlipaySignature;
import com.alipay.api.request.AlipayTradePagePayRequest;
import com.sl.boot.admindemo.commmon.config.AliPayConfig;
import com.sl.boot.admindemo.dao.DrugOrderDao;
import com.sl.boot.admindemo.domain.drugOrder.entity.DrugOrder;
import com.sl.boot.admindemo.domain.drugOrder.entity.dto.AliPay;
import com.sl.boot.admindemo.domain.prescription.entity.Prescription;
import com.sl.boot.admindemo.domain.prescription.service.PrescriptionService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.configurationprocessor.json.JSONObject;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.Time;
import java.util.HashMap;
import java.util.Map;

/**
 * 沙箱支付模块
 */
@RestController
@RequestMapping("/alipay")
@Slf4j
public class AliPayController {

    private static final String GATEWAY_URL = "https://openapi.alipaydev.com/gateway.do";
    private static final String FORMAT = "JSON";
    private static final String CHARSET = "UTF-8";
    //签名方式
    private static final String SIGN_TYPE = "RSA2";

    @Resource
    private AliPayConfig aliPayConfig;

    @Resource
    private DrugOrderDao orderMapper;

    @Resource
    PrescriptionService prescriptionService;

    /**
     * 调用支付宝
     *
     * @param aliPay
     * @param httpResponse
     * @throws Exception
     */
    @GetMapping("/pay")
    public void pay(AliPay aliPay, HttpServletResponse httpResponse) throws Exception {
        // 1. 创建Client，通用SDK提供的Client，负责调用支付宝的API
        AlipayClient alipayClient = new DefaultAlipayClient(GATEWAY_URL, aliPayConfig.getAppId(),
                aliPayConfig.getAppPrivateKey(), FORMAT, CHARSET, aliPayConfig.getAlipayPublicKey(), SIGN_TYPE);

        // 2. 创建 Request并设置Request参数
        AlipayTradePagePayRequest request = new AlipayTradePagePayRequest();  // 发送请求的 Request类
        request.setNotifyUrl(aliPayConfig.getNotifyUrl());
        JSONObject bizContent = new JSONObject();
        bizContent.put("out_trade_no", aliPay.getTraceNo());  // 我们自己生成的订单编号
        bizContent.put("total_amount", aliPay.getTotalAmount()); // 订单的总金额
        bizContent.put("subject", aliPay.getSubject());   // 支付的名称（药品名）
        bizContent.put("product_code", "FAST_INSTANT_TRADE_PAY");  // 固定配置
        request.setBizContent(bizContent.toString());

        // 执行请求，拿到响应的结果，返回给浏览器
        String form = "";
        try {
            form = alipayClient.pageExecute(request).getBody(); // 调用SDK生成表单
        } catch (AlipayApiException e) {
            e.printStackTrace();
        }
        httpResponse.setContentType("text/html;charset=" + CHARSET);
        httpResponse.getWriter().write(form);// 直接将完整的表单html输出到页面
        httpResponse.getWriter().flush();
        httpResponse.getWriter().close();
    }

    /**
     * 回调接口
     *
     * @param request
     * @return
     * @throws Exception
     */
    @PostMapping("/notify")  // 必须是POST接口
    @Transactional
    public String payNotify(HttpServletRequest request) throws Exception {
        if (request.getParameter("trade_status").equals("TRADE_SUCCESS")) {
            log.info("=========支付宝异步回调========");

            Map<String, String> params = new HashMap<>();
            Map<String, String[]> requestParams = request.getParameterMap();
            for (String name : requestParams.keySet()) {
                params.put(name, request.getParameter(name));
                // System.out.println(name + " = " + request.getParameter(name));
            }

            String sign = params.get("sign");
            String content = AlipaySignature.getSignCheckContentV1(params);
            boolean checkSignature = AlipaySignature.rsa256CheckContent(content, sign, aliPayConfig.getAlipayPublicKey(), "UTF-8"); // 验证签名
            // 支付宝验签
            if (checkSignature) {
                // 验签通过
                log.info("交易名称: " + params.get("subject"));
                log.info("交易状态: " + params.get("trade_status"));
                log.info("支付宝交易凭证号: " + params.get("trade_no"));
                log.info("商户订单号: " + params.get("out_trade_no"));
                log.info("交易金额: " + params.get("total_amount"));
                log.info("买家在支付宝唯一id: " + params.get("buyer_id"));
                log.info("买家付款时间: " + params.get("gmt_payment"));
                log.info("买家付款金额: " + params.get("buyer_pay_amount"));

                DrugOrder order = new DrugOrder(
                        Integer.valueOf(params.get("out_trade_no")),
                        params.get("subject"),
                        Double.valueOf(params.get("buyer_pay_amount")), //金额
                        Time.valueOf(params.get("gmt_payment")) //时间
                );
                // 更新订单已支付
                orderMapper.insert(order);
                
                //订单改为已支付
                String id = params.get("out_trade_no");
                Prescription prescription = new Prescription();
                prescription.setStatus("已取药");
                prescriptionService.update(prescription);
            }
        }
        return "success";
    }
    
}